Bleeder valve



OC. 4, 1932. J, P, GRILLJ I 1,881,272

BLEEDER VALVE Filed May 13, 1929 Patented Oct. 4, 1932 UNITED STATES IPATENT@ OFFICE JOI-IN .PHILLIP GRILLI, OF CHICAGO, ILLINOIS, .ASSIGNOR TO H. A. BRASSERT & COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS Vntnnnrra VALVE Appneation mea May 13,

against leakage of the gas from the blast furnace.

Another and further obj ect of my `invention is the provision of a bleeder valve having means associated therewith to prevent thev escape of coke, limestone and the like, shouldl an explosion take place in the blast furnace during its `operation and thereby blow pieces of coke, limestone and the like out of the bleeder valve which might result in injury to some of the operators of the furnace.

Another and further object of my inven-` tion is the provision of a'valve having a labyrinth sealing arrangement wit-hin which dust and the fluid mixture resulting from the condensate formed from the gas, form a sealing member in addition to the usual sealing means provided by the valve on its seat, so that in effect a double valve is provided to prevent the escape of gas from the blast furnace.

Another and further object of my invention is the provision of a bleeder valve having a removable seat therein and which is adaptcd to be changed to provide a smooth seating surface for the valve should the seat become channeled by reason of the escape of gas and particles of dust between the valve andV its seat.

Another and further object of my invention is the provision of a bleeder valve comprising a valve member having a circumferent-ially extending groove in the valve portion thereof adapted to catch dirt and form an effective sealing means between the valve member proper-and its seat.

These and other objects of my invention will be more fully and better understood by 1929. Serial No. 362,559.

- reference to the accompanying sheet of drawing,and in which- Figure 1 is a diagrammatic view of the top of a blast furnace showing my improved bleeder valve in position on the uptakes of a blast furnace; Figure 2 is a vertical sectional view through one of the valves and c Figure 3 is a fragmentary view showing a modified form of valve member and valve seat.

Referring now specifically to the drawing and in which like reference characters" refer to like parts throughout, the top of 'a blast furnace shell 10 is shown havinga pair of 50 uptakes 11 and 12 respectively on the outer ends of which a pair of bleeder valves 13, 13 are placed. The usual housing 14 is shown. over the charging' apparatus of the blast furnace, with a housingl shown at the. top through which the coke or limestone and the like is charged into the furnace.

Referring particularly to Figure 2, and in which the upper endof the uptake 12 is illustrated, an angle 13a israttached to the upper 70 end of the uptake 12'and upon which a valve casing 14a is seated, the saidy valve casing being secu red t0 the angle 13a in, any approved manner.y At one side of the valve casing 14a is provided an extension 15a upon which a 75 bracket 16 is mounted, upon the upper end of which a lever 17 is positioned, tothe outer end of which a cable 18 is attached which extends downward to a point adjacent the ground for thepurpose of opening the bleed- 3H er valve, thereby allowing the gas to escape from the furnace during the blowing down operation. f

The valve casing 14 has a plurality of cooling finsy 19, 19 placed around the outer cir- S5 cumference of the valve and extending outward therefroml in a radial direction, these cooling fins being in spaced relation with each other and projecting outward so that the heat is radiated away from the valve casing sav y the furnace.

14 through the fins 19. 'Ihe casing 14 at its upper end is internally threaded at 20 and has a seat 21 secured thereto4 with the said seat having a sloping outer surface 22 preferably extending in a downward direction. A valve member 23 is provided which has an inclined face adaptedto cooperate with the sloping surface 22 of the valve scat 21 and which has a pair of circuinferentially extending grooves 24, 24 therein open on the side adjacent the valve seat, and which are adapted to catch dust, moisture and the like and provide an effective sealing medium between the valve 23 and the seat 2l. p

The valve 23 has a plurality of cooling fins 25, 25 placed therearound on its outer periphery adapted to function in a similar manner to the fins 19 which are attached to the `valve casing 14, thereby conducting the heat away from the valve and causing'A itsy temperature to remain sufficiently low so that the gases coming in contact with the valve are partially condensed, moisture thereby being formed which, combining with the dust, as-

sists the sealing of the bleeder valve. The

valve 23 has a downwardly extending portion 26 centrally located on its underside ith a labyrinth disc 27 being positioned against the outer surface of the portion 26, this member having a labyrinth outer edge 28 for thepurpose of affording a seal between the inner side ofthe valve seat 21 and the member 27.

A bale 29Vis provided having inverted coneshaped openings 30, 30 therein with a rod 31 projecting through a trunnion portion 32 on said baffle 29, the said rod 31 extending upward through the valve member 23 and meinber 27 with the key 32a being provided which holds the valve members 23 and 27 and the baille 29 in fixed relation with'each other.

A link 33 is provided through which the inner end of the lever 17 extends through which the valve may be opened by the cable'18 when desired. On the inner sides of the uptake 12 is provided a plurality of vertically extending guides 34, 34 which coact to retain the baffle 29 in proper position in the uptake 12. Mounted upon the coke baille 29 is a plurality of guides35, 35 which extend radially from the member 32 across the face of the coke baffle 29 upon which a pair of guide members 36, 36 are mounted which form guides for the labyrinth disc 27. These members 36, 36 maybe keyed to the portion 32 and in effect form guides for the labyrinth disc and also for the valve member 23 so that this member is properly seated 'with respect to the valve casing 14. The members 35 also engage against the valve casing 14thereby preventing the valve from opening too great a distance or blowing completely off the top of the uptake should an explosion take place within The inverted cone-shaped openings 30, 30 in the coke baffle 29 allow the gases to pass upward to the valve but prevent pieces of coke, limestone or the like from lodging in the bafie29 as might result if the walls of these openings were vertical instead of being inclined as shown.

In Figure 3 is illustrated a modified form vprovided which provides effective cooling means through the fins which ar-e secured to the valve casing and also to the valve seat, by means of which the heat from the gases is radiated to the atmosphere thereby reducing the temperature of the gases within the valve to below dew point so that when the gases are condensed they mix with the air, coke dust and the like, and forma sealing means between the valve member 23 and its seat and also around the labyrinth outer edges of the member 27 so that the valve is thereby effectually sealed,

`Should an explosion take place inside of the furnace, the force of the gas being exerted against the baifle- 29 and also the labyrinth member 27 will cause the valve to lift thereby allowing the gas to escape and relieving the pressure of the gas in thel furnace without damage to the furnace itself.

In ease it is desired to release the-gas in the furnace during the blowing down operation, the valves are lifted by means of the cables 18 attached to the lever v17 so that the gas passes freely out of the uptakes 11 and 12.

Upon the cables being released the valve automatically returns to closed position and is properly centered by the guides 34 att-ached to the side of the uptake 12 and also the guides 35 and 36.

While I have described more or less precisely the details of construction, I donot wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of my invention.

I claim:

1. A bleeder valve comprising in combination a casing, a valve member, and a disc member extending substantially across the area of the casing, the said disc member having a serrated outer edge.

2. A bleeder valve comprising in combination a casing, a valveV member, and a disc member extending substantially across the iet area of the casing, the said disc having a plurality of circumferentially extending grooves in its outer edge.

3. A bleeder valve comprising in combination a casing, a valve member, and a disc `member extending substantially across the area of the casing, the said disc having a labyrinth passage between the casing and the said disc.

4. A bleeder valve comprising in combination a casing, a valve member mounted thereon, a plate coke baiile having truncated openings therein, guide members on said baiiie, and means whereby the said coke baiile is secured to said valve member.

5. A bleeder valve comprising in combination a casing, a valve member mounted'thereon, a plate coke baiiie having truncated openings therein, guide memb-ers on said baiile, the said baffle having inverted cone-shaped openings therein, and means whereby the said coke baille is secured to said valve member.

6. A bleeder valve comprising in combination a casing, a valve member mounted thereon, a circular plate coke baille having truncated openings therein, guide members on said baille, the said baiiie having openings therein of smaller cross sectional area at their lower sides than at their upper sides, and means whereby the said coke baffle is secured to said valve member. Y

7. A bleeder valve comprising in combination a casing, a valve member, cooling yiinsin said casingV and said valve member, a labyrinth disc, a coke baille, guides on said baille, and means whereby the said valve, coke I baille and disc are secured together.

8. A bleeder valve, comprising in combination a casing member, a valve member adapted Vto seat on said casing, a labyrinth disc, a plate coke baiiie extending substantially cross the said casing, guides on said coke baiile, guides on said casing, and means whereby the said coke baffle and said valve member are securedtogether.

9. A bleeder valve, comprising in combination, a casing, a removable valve seat in said casing, a valve member, a labyrinth disc member mounted adjacent said valve seat, a plate coke baiiie having truncated openings therein, means whereby the said coke baille, the disc member and said valve are secured together, guide members on said coke baffle, and cooling iins on said valve and said c-asing. Y

Sign-ed at Chicago, Illinois, this 4th day of May, 1929.

JOHN PHILLIP GRILLI. 

